atiq's gum and stabilizers

Gums and stabilizers
What is hydrocolloid?
- A range of polysaccharides and proteins
- Water soluble gum
- Gums
- Stabilizers
usage level < 2 %

Primary function	Secondary function
¨ Thickening agent ¨ gelling or texturizing agents	¨ stabilization of emulsions ¨ suspension of particulates ¨ control of crystallisation ¨ encapsulation ¨ formation of film

Factor which affect gum properties
¨ molecular weight
¨ monosaccharide composition
¨ type of side chain
¨ number of side chain
¨ distribution of side chain
Main classes of hydrocolloids
¨ derivatives from exudation or sap of trees
¨ microbial gums
¨ extract from seed
¨ extract from seaweeds
¨ extract from tubers\
¨ extract from plant parts
Sources of raw materials

Gum arabic	Acacia Senegal L.
Carrageenan	Seaweed
Locust bean gum	Seed of carob bean
Konjac glucomannan	Armophophallus konjac, K.Koch tuber
Pectin	Peel of citrus fruits or apple pomace

Gelation of hydrocolloids
¨ heating/cooling
¨ presence of cations
¨ acidic pH + high sugar concentration
¨ alkaline pH
¨ thermoreversible gelling agents
-e.g: gelatin, agar, LM pectin, gellan gum, metjyl cellulose, HPMC, k-
carrageenan, i- carrageenan.
¨ thermally irreversible gelling agents
- e.g: alginate, starch, konjac, HM pectin